{"id":2554,"date":"2018-09-11T19:28:47","date_gmt":"2018-09-11T17:28:47","guid":{"rendered":"http:\/\/www.inst-sim.com\/1\/?p=2554"},"modified":"2018-09-13T21:32:27","modified_gmt":"2018-09-13T19:32:27","slug":"tank-breathing-valve","status":"publish","type":"post","link":"https:\/\/www.inst-sim.com\/1\/valves\/tank-breathing-valve\/","title":{"rendered":"\u0635\u0645\u0627\u0645 \u0627\u0644\u062a\u0646\u0641\u0633 \u0644\u0644\u062e\u0632\u0627\u0646 Breather Valve"},"content":{"rendered":"<p dir=\"ltr\"><img loading=\"lazy\" class=\"aligncenter wp-image-2566 size-full\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather-valve.jpg\" alt=\"\" width=\"433\" height=\"500\" srcset=\"https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather-valve.jpg 433w, https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather-valve-260x300.jpg 260w\" sizes=\"(max-width: 433px) 100vw, 433px\" \/><\/p>\n<p dir=\"ltr\" style=\"text-align: justify;\">The breather valve also known as pressure\/vacuum relief valve is a protective device mounted on the top of a fixed roof atmospheric storage tank. Its primary function is to conserve the loss of storage tank content when the tank is in out-breathing mode. The purpose &amp; selection of breather valve is mainly to control the in-breathing and out-breathing of storage tank by protecting the tank under over pressurization and vacuum and possible rupture or imploding.<\/p>\n<p>*<\/p>\n<p style=\"text-align: justify;\"><span id=\"result_box\" class=\"\" lang=\"ar\"><span title=\"The breather valve also known as pressure\/vacuum relief valve is a protective device mounted on the top of a fixed roof atmospheric storage tank.\">\u0635\u0645\u0627\u0645 \u0627\u0644\u062a\u0646\u0641\u0651\u0633\u00a0<span style=\"color: #0000ff;\">Breather Valve<\/span> \u0648\u0627\u0644\u0645\u0639\u0631\u0648\u0641 \u0623\u064a\u0636\u0627\u064b \u0628\u0635\u0645\u0627\u0645 \u062a\u062e\u0641\u064a\u0641 \u0627\u0644\u0636\u063a\u0637 \/ \u0627\u0644\u062a\u0641\u0631\u064a\u063a <span style=\"color: #0000ff;\">Pressure\/Vacuum Relief Valve<\/span> \u0648\u0647\u0648 \u0639\u0628\u0627\u0631\u0629 \u0639\u0646 \u062c\u0647\u0627\u0632 \u062d\u0645\u0627\u064a\u0629 \u064a\u062a\u0645 \u062a\u0631\u0643\u064a\u0628\u0647 \u0623\u0639\u0644\u064a \u062e\u0632\u0627\u0646\u0627\u062a \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u062c\u0648\u064a \u062b\u0627\u0628\u062a\u0629 \u0627\u0644\u0633\u0642\u0641 <span style=\"color: #0000ff;\">Fixed Roof Atmospheric Tank<\/span> . <\/span><\/span><span id=\"result_box\" class=\"\" lang=\"ar\"><span title=\"Its primary function is to conserve the loss of storage tank content when the tank is in out-breathing mode.\">\u0648\u062a\u062a\u0645\u062b\u0644 \u0648\u0638\u064a\u0641\u062a\u0647 \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629 \u0641\u064a \u0627\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u0649 \u0645\u062d\u062a\u0648\u064a \u0627\u0644\u062e\u0632\u0627\u0646 \u0645\u0646 \u0627\u0644\u062a\u0633\u0631\u0628 \u0644\u0644\u062e\u0627\u0631\u062c \u0639\u0646\u062f\u0645\u0627 \u064a\u0643\u0648\u0646 \u0627\u0644\u062e\u0632\u0627\u0646 \u0641\u064a \u0648\u0636\u0639 \u0627\u0644\u062a\u0646\u0641\u0633 \u0627\u0644\u062e\u0627\u0631\u062c\u064a <span style=\"color: #0000ff;\">Out-Breathing Mode<\/span> . <\/span><span title=\"The purpose &amp; selection of breather valve is mainly to control the in-breathing and out-breathing of storage tank by protecting the tank under over pressurization and vacuum and possible rupture or imploding \">\u0627\u0644\u063a\u0631\u0636 \u0645\u0646\u0647 \u0648 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0646\u0648\u0639 \u0627\u0644\u062e\u0627\u0635 \u0628\u0635\u0645\u0627\u0645 \u0627\u0644\u062a\u0646\u0641\u0633 \u064a\u0647\u062f\u0641 \u0628\u0634\u0643\u0644 \u0623\u0633\u0627\u0633\u064a \u0644\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u062a\u0646\u0641\u0633 \u0627\u0644\u062f\u0627\u062e\u0644\u064a <span style=\"color: #0000ff;\">In-Breathing<\/span> \u0648\u0627\u0644\u062a\u0646\u0641\u0633 \u0627\u0644\u062e\u0627\u0631\u062c\u064a\u00a0<span style=\"color: #0000ff;\" title=\"Its primary function is to conserve the loss of storage tank content when the tank is in out-breathing mode.\">Out-Breathing <\/span>\u0644\u062e\u0632\u0627\u0646 \u0627\u0644\u062a\u062e\u0632\u064a\u0646 \u0645\u0645\u0627 \u064a\u0639\u0645\u0644 \u0639\u0644\u064a \u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062e\u0632\u0627\u0646 \u0641\u064a \u062d\u0627\u0644\u062a\u064a \u0627\u0644\u0636\u063a\u0637 \u0648 \u0627\u0644\u0641\u0631\u0627\u063a \u0648 \u062d\u0645\u0627\u064a\u062a\u0647 \u0645\u0646 \u0627\u0644\u062a\u0645\u0632\u0642 \u0623\u0648 \u0627\u0644\u0625\u0646\u0647\u064a\u0627\u0631 \u0627\u0644\u0645\u062d\u062a\u0645\u0644<\/span><\/span> .<\/p>\n<p>*<\/p>\n<p dir=\"ltr\" style=\"text-align: justify;\">The storage tank needs a suitable size vent (fixed or controlled venting) to achieve in-breathing and out-breathing cycles during loading or unloading operations. The in-breathing of storage tank is due to the pump in of fluid to storage tank and condensing of vapour part of storage tank at lower ambient temperature. This develops a vacuum in the tank if fixed vent nozzles is under sized or controlled venting is in close mode till preset value. The out-breathing process is an opposite phenomenon to in-breathing and it takes place when the tank is loaded and evaporation of liquid due to higher atmosphere temperature. This phenomenon develops over pressure in tank if vent nozzle is under sized or controlled venting in close mode till preset value. The pressure and vacuum developed in the tank shall be within the design values allowable by a code and function of pressure \/ vacuum relief valve is to conserve the vapour loss by opening and closing within the set values to safeguard the tank design parameters. [<a href=\"http:\/\/www.piping-engineering.com\/types-of-breather-valves.html\" target=\"_blank\" rel=\"noopener\">Source<\/a>]<\/p>\n<p>*<\/p>\n<p style=\"text-align: justify;\">\u064a\u062d\u062a\u0627\u062c \u062e\u0632\u0627\u0646 \u0627\u0644\u062a\u062e\u0632\u064a\u0646 <span style=\"color: #0000ff;\">Storage Tank<\/span> \u0625\u0644\u064a \u0645\u0646\u0641\u0630 \u062a\u0647\u0648\u064a\u0629 <span style=\"color: #0000ff;\">Vent<\/span> \u0630\u0648 \u062d\u062c\u0645 \u0645\u0646\u0627\u0633\u0628 ( \u0645\u0646\u0641\u0630 \u062b\u0627\u0628\u062a <span style=\"color: #0000ff;\">Fixed<\/span> \u0623\u0648 \u064a\u0645\u0643\u0646 \u0627\u0644\u062a\u062d\u0643\u0645 \u0628\u0647 <span style=\"color: #0000ff;\">Controlled Venting<\/span> ) \u0644\u0623\u062f\u0627\u0621 \u0645\u0647\u0645\u062a\u064a <span id=\"result_box\" class=\"\" lang=\"ar\"><span title=\"The purpose &amp; selection of breather valve is mainly to control the in-breathing and out-breathing of storage tank by protecting the tank under over pressurization and vacuum and possible rupture or imploding \">\u0627\u0644\u062a\u0646\u0641\u0633 \u0627\u0644\u062f\u0627\u062e\u0644\u064a <span style=\"color: #0000ff;\">In-Breathing<\/span> \u0648\u0627\u0644\u062a\u0646\u0641\u0633 \u0627\u0644\u062e\u0627\u0631\u062c\u064a\u00a0<span style=\"color: #0000ff;\" title=\"Its primary function is to conserve the loss of storage tank content when the tank is in out-breathing mode.\">Out-Breathing <\/span>\u0623\u062b\u0646\u0627\u0621 \u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062a\u062e\u0632\u064a\u0646 \u0648\u0627\u0644\u062a\u0641\u0631\u064a\u063a . \u064a\u062d\u062f\u062b \u0627\u0644\u062a\u0646\u0641\u0633 \u0627\u0644\u062f\u0627\u062e\u0644\u064a <span style=\"color: #0000ff;\">In-Breathing<\/span> \u0646\u062a\u064a\u062c\u0629 \u0633\u062d\u0628 \u0645\u0636\u062e\u0629 \u0645\u0646 \u0627\u0644\u062e\u0632\u0627\u0646 \u0648\u062a\u0643\u062b\u0641 \u0627\u0644\u0623\u0628\u062e\u0631\u0629 \u0627\u0644\u0645\u0648\u062c\u0648\u062f\u0629 \u0623\u0639\u0644\u064a \u0627\u0644\u0633\u0627\u0626\u0644<\/span><\/span><span id=\"result_box\" class=\"\" lang=\"ar\"><span title=\"The inbreathing of storage tank is due to the pump in of fluid to storage tank and condensing of vapour part of storage tank at lower ambient temperature.\"> \u0641\u064a \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u062d\u064a\u0637 \u0627\u0644\u0645\u0646\u062e\u0641\u0636\u0629 \u0648\u064a\u0646\u062a\u062c \u0639\u0646 \u0630\u0644\u0643 <\/span><span title=\"This develops a vacuum in the tank if fixed vent nozzles is under sized or controlled venting is in close mode till preset value.\">\u0641\u0631\u0627\u063a \u0641\u064a \u0627\u0644\u062e\u0632\u0627\u0646 \u0648\u062e\u0627\u0635\u0629 \u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0641\u062a\u062d\u0627\u062a \u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0627\u0644\u062b\u0627\u0628\u062a\u0629 \u0630\u0627\u062a \u062d\u062c\u0645 \u0623\u0642\u0644 \u0645\u0646 \u0627\u0644\u0645\u0637\u0644\u0648\u0628 \u0623\u0648 \u0623\u0646 \u0627\u0644\u0641\u062a\u062d\u0627\u062a \u0627\u0644\u0645\u062a\u063a\u064a\u0631\u0629 <span style=\"color: #0000ff;\">Controlled Venting<\/span> \u0641\u064a \u0648\u0636\u0639 \u0627\u0644\u0625\u063a\u0644\u0627\u0642 <span style=\"color: #0000ff;\">Close Mode<\/span> \u0648\u0627\u0644\u0630\u064a \u064a\u0638\u0644 \u0641\u064a \u062d\u0627\u0644\u0629 \u0625\u063a\u0644\u0627\u0642 \u062d\u062a\u064a \u0627\u0644\u0648\u0635\u0648\u0644 \u0625\u0644\u064a \u0627\u0644\u0642\u064a\u0645\u0629 \u0627\u0644\u0645\u0636\u0628\u0648\u0637\u0629 \u0645\u0633\u0628\u0642\u064b\u0627. <\/span><span title=\"The out-breathing process is an opposite phenomenon to inbreathing and it takes place when the tank is loaded and evaporation of liquid due to higher atmosphere temperature.\">\u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062a\u0646\u0641\u0651\u0633 \u0627\u0644\u062e\u0627\u0631\u062c\u064a\u00a0<span style=\"color: #0000ff;\" title=\"The purpose &amp; selection of breather valve is mainly to control the in-breathing and out-breathing of storage tank by protecting the tank under over pressurization and vacuum and possible rupture or imploding \"><span title=\"Its primary function is to conserve the loss of storage tank content when the tank is in out-breathing mode.\">Out-Breathing<\/span><\/span> \u0647\u064a \u0638\u0627\u0647\u0631\u0629 \u0645\u0639\u0627\u0643\u0633\u0629 \u0644<span title=\"The purpose &amp; selection of breather valve is mainly to control the in-breathing and out-breathing of storage tank by protecting the tank under over pressurization and vacuum and possible rupture or imploding \">\u0644\u062a\u0646\u0641\u0633 \u0627\u0644\u062f\u0627\u062e\u0644\u064a <span style=\"color: #0000ff;\">In-Breathing<\/span><\/span> \u060c \u0648\u062a\u062d\u062f\u062b \u0639\u0646\u062f\u0645\u0627 \u064a\u062a\u0645 \u0627\u0644\u0636\u062e \u0625\u0644\u064a \u0627\u0644\u062e\u0632\u0627\u0646 \u0648\u062a\u0628\u062e\u0631 \u0627\u0644\u0633\u0627\u0626\u0644 \u0628\u0633\u0628\u0628 \u0627\u0631\u062a\u0641\u0627\u0639 \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062c\u0648 \u060c \u0648\u064a\u0646\u062a\u062c \u0639\u0646 \u0630\u0644\u0643 \u0632\u064a\u0627\u062f\u0629 \u0641\u064a \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0644\u0644\u062e\u0632\u0627\u0646\u00a0<span title=\"This develops a vacuum in the tank if fixed vent nozzles is under sized or controlled venting is in close mode till preset value.\">\u0648\u062e\u0627\u0635\u0629 \u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0641\u062a\u062d\u0627\u062a \u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0627\u0644\u062b\u0627\u0628\u062a\u0629 \u0630\u0627\u062a \u062d\u062c\u0645 \u0623\u0642\u0644 \u0645\u0646 \u0627\u0644\u0645\u0637\u0644\u0648\u0628 \u0623\u0648 \u0623\u0646 \u0627\u0644\u0641\u062a\u062d\u0627\u062a \u0627\u0644\u0645\u062a\u063a\u064a\u0631\u0629 <span style=\"color: #0000ff;\">Controlled Venting<\/span> \u0641\u064a \u0648\u0636\u0639 \u0627\u0644\u0625\u063a\u0644\u0627\u0642 <span style=\"color: #0000ff;\">Close Mode <\/span><\/span>. <\/span><\/span><span id=\"result_box\" class=\"\" lang=\"ar\"> <span title=\"The pressure and vacuum developed in the tank shall be within the design values allowable by a code and function of pressure \/ vacuum relief valve is to conserve the vapour loss by opening and closing within the set values to safeguard the tank design parameters.\">\u064a\u062c\u0628 \u0623\u0646 \u062a\u0643\u0648\u0646 \u0642\u064a\u0645\u0629 \u0643\u0644 \u0645\u0646 \u0627\u0644\u0636\u063a\u0637 <span style=\"color: #0000ff;\">Pressure<\/span> \u0648\u0627\u0644\u0641\u0631\u0627\u063a <span style=\"color: #0000ff;\">Vacuum<\/span> \u0627\u0644\u0646\u0627\u062a\u062c\u064a\u0646 \u0639\u0646 \u0647\u0630\u0647 \u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u0641\u064a \u062d\u062f\u0648\u062f \u0627\u0644\u0642\u064a\u0645 \u0627\u0644\u0645\u0633\u0645\u0648\u062d \u0628\u0647\u0627 \u0641\u064a \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u062e\u0632\u0627\u0646 \u0648\u0627\u0644\u0645\u0648\u0627\u0641\u0642\u0629 \u0644\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0645\u062a\u0628\u0639\u0629 . \u0648\u0644\u0635\u0645\u0627\u0645 \u062a\u062e\u0641\u064a\u0641 \u0627\u0644\u0636\u063a\u0637 \/ \u0627\u0644\u062a\u0641\u0631\u064a\u063a\u00a0<span style=\"color: #0000ff;\" title=\"The breather valve also known as pressure\/vacuum relief valve is a protective device mounted on the top of a fixed roof atmospheric storage tank.\">Pressure\/Vacuum Relief Valve<\/span> \u0648\u0638\u064a\u0641\u0629 \u0623\u062e\u0631\u064a \u0647\u064a \u0627\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u0649 \u0627\u0644\u0623\u0628\u062e\u0631\u0629 \u0645\u0646 \u0627\u0644\u062a\u0633\u0631\u0628 \u0644\u0644\u062e\u0627\u0631\u062c \u0648\u0630\u0644\u0643 \u0639\u0646 \u0637\u0631\u064a\u0642 \u0627\u0644\u0641\u062a\u062d \u0648\u0627\u0644\u0625\u063a\u0644\u0627\u0642 \u0644\u0641\u062a\u062d\u0627\u062a \u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0641\u064a \u062d\u0627\u0644\u0629 \u0648\u0635\u0648\u0644 \u0627\u0644\u0636\u063a\u0637 \u0625\u0644\u064a \u0627\u0644\u0642\u064a\u0645 \u0627\u0644\u0645\u062d\u062f\u062f\u0629 \u0633\u0644\u0641\u0627\u064b \u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062e\u0632\u0627\u0646.<\/span><\/span><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-2595 size-full\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/vacuum-implosion-Ani.gif\" alt=\"\" width=\"460\" height=\"442\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #0000ff;\">\u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0641\u0631\u0627\u063a\u064a Vacuum \u0639\u0644\u064a \u062e\u0632\u0627\u0646 \u0646\u0627\u0642\u0644\u0629<\/span><\/p>\n<p>*<\/p>\n<h2><span style=\"color: #ff6600;\">\u0623\u0634\u0643\u0627\u0644 \u0635\u0645\u0627\u0645 \u0627\u0644\u062a\u0646\u0641\u0633<\/span><\/h2>\n<p>\u0642\u062f \u062a\u0623\u062a\u064a \u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u062a\u0646\u0641\u0633 \u0644\u0644\u062e\u0632\u0627\u0646\u0627\u062a \u0641\u064a \u0623\u0634\u0643\u0627\u0644 \u0645\u062e\u062a\u0644\u0641\u0629 \u0645\u0646\u0647\u0627 :<\/p>\n<ul style=\"list-style-type: square;\">\n<li><span id=\"result_box\" class=\"\" lang=\"ar\"><span title=\"The pressure and vacuum developed in the tank shall be within the design values allowable by a code and function of pressure \/ vacuum relief valve is to conserve the vapour loss by opening and closing within the set values to safeguard the tank design parameters.\">\u0635\u0645\u0627\u0645 \u062a\u062e\u0641\u064a\u0641 \u0627\u0644\u0636\u063a\u0637 \/ \u0627\u0644\u062a\u0641\u0631\u064a\u063a\u00a0<span style=\"color: #0000ff;\" title=\"The breather valve also known as pressure\/vacuum relief valve is a protective device mounted on the top of a fixed roof atmospheric storage tank.\">Pressure\/Vacuum Relief Valve<\/span><\/span><\/span> .<\/li>\n<li><span id=\"result_box\" class=\"\" lang=\"ar\"><span title=\"The pressure and vacuum developed in the tank shall be within the design values allowable by a code and function of pressure \/ vacuum relief valve is to conserve the vapour loss by opening and closing within the set values to safeguard the tank design parameters.\">\u0635\u0645\u0627\u0645 \u062a\u062e\u0641\u064a\u0641 \u0627\u0644\u0636\u063a\u0637<\/span><\/span> \u0641\u0642\u0637 <span style=\"color: #0000ff;\">Pressure Only Relief Valves<\/span> .<\/li>\n<li><span id=\"result_box\" class=\"\" lang=\"ar\"><span title=\"The pressure and vacuum developed in the tank shall be within the design values allowable by a code and function of pressure \/ vacuum relief valve is to conserve the vapour loss by opening and closing within the set values to safeguard the tank design parameters.\">\u0635\u0645\u0627\u0645 \u062a\u062e\u0641\u064a\u0641<\/span><\/span> \u0627\u0644\u0641\u0631\u0627\u063a \u0641\u0642\u0637\u00a0<span style=\"color: #0000ff;\">Vacuum Only Relief Valves<\/span> .<\/li>\n<li>\u0635\u0645\u0627\u0645\u0627\u062a \u0645\u063a\u0644\u0642\u0629 \u0628\u064a\u0627\u064a\u00a0<span style=\"color: #0000ff;\">Spring Loaded Relief valves<\/span> .<\/li>\n<li>\u0635\u0645\u0627\u0645\u0627\u062a \u0645\u0634\u063a\u0644\u0629 \u0628\u0642\u0627\u0626\u062f <span style=\"color: #0000ff;\">Pilot Operated valves<\/span> .<\/li>\n<\/ul>\n<p>*<\/p>\n<p dir=\"ltr\"><strong>Configurations of Breather Valves<\/strong><\/p>\n<p dir=\"ltr\">Breather valves are available in a number of configurations as listed below.<\/p>\n<p dir=\"ltr\">* Pressure And Vacuum Relief Valves<\/p>\n<p dir=\"ltr\">* Pressure Only Relief Valves<\/p>\n<p dir=\"ltr\">* Vacuum Only Relief Valves<\/p>\n<p dir=\"ltr\">* Spring Loaded Relief valves<\/p>\n<p dir=\"ltr\">* Pilot Operated valves<\/p>\n<p>*<\/p>\n<h2><span style=\"color: #ff6600;\">\u0627\u0644\u0625\u063a\u0644\u0627\u0642 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u064a\u0627\u064a Spring \u0623\u0648 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u062b\u0642\u0644 Weight<\/span><\/h2>\n<p style=\"text-align: justify;\"><span id=\"result_box\" class=\"\" lang=\"ar\"><span title=\"The breather valve also known as pressure\/vacuum relief valve is a protective device mounted on the top of a fixed roof atmospheric storage tank.\">\u064a\u062a\u0645 \u0625\u063a\u0644\u0627\u0642 \u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u062a\u0646\u0641\u0651\u0633\u00a0<span style=\"color: #0000ff;\">Breather Valve<\/span> \u0623\u0648 \u0635\u0645\u0627\u0645 \u062a\u062e\u0641\u064a\u0641 \u0627\u0644\u0636\u063a\u0637 \/ \u0627\u0644\u062a\u0641\u0631\u064a\u063a <span style=\"color: #0000ff;\">Pressure\/Vacuum Relief Valve<\/span> \u0625\u0645\u0627 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0642\u0631\u0635 \u0645\u0636\u063a\u0648\u0637 \u0628\u0648\u0632\u0646 <span style=\"color: #0000ff;\">Weight-Loaded Pallet<\/span> \u0623\u0648 \u0642\u0631\u0635 \u0645\u0636\u063a\u0648\u0637 \u0628\u064a\u0627\u064a <span style=\"color: #0000ff;\">Spring-Loaded Pallet<\/span> \u060c \u062d\u064a\u062b \u064a\u062a\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u0623\u0628\u062e\u0631\u0629 \u0639\u0628\u0631 \u0627\u0644\u0635\u0645\u0627\u0645 \u0623\u0648 \u0627\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u064a\u0647 \u0645\u063a\u0644\u0642 \u0645\u0646 \u062e\u0644\u0627\u0644 \u0648\u0632\u0646 \u0627\u0644\u0642\u0631\u0635 \u0623\u0648 \u0645\u0646 \u062e\u0644\u0627\u0644 \u064a\u0627\u064a\u00a0<span style=\"color: #0000ff;\">Spring<\/span> \u064a\u0636\u063a\u0637 \u0639\u0644\u064a \u0627\u0644\u0642\u0631\u0635 .<br \/>\n<\/span><\/span><\/p>\n<p>*<\/p>\n<p dir=\"ltr\"><strong>Combinations of pallet and spring loading on Breather valves<\/strong><\/p>\n<p dir=\"ltr\" style=\"text-align: justify;\">Breather or pressure\/vacuum relief valves have weight-loaded or spring-loaded pallets. Flow through the valve is controlled by the weight of the pallet or the spring force acting on the pallet to keep the device closed. [<a href=\"http:\/\/www.piping-world.com\/breather-valve\/breather-valves-introduction\" target=\"_blank\" rel=\"noopener\">Source<\/a>]<\/p>\n<p>.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-2603 size-full\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather1.png\" alt=\"\" width=\"415\" height=\"385\" srcset=\"https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather1.png 415w, https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather1-300x278.png 300w\" sizes=\"(max-width: 415px) 100vw, 415px\" \/><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-2607 size-full\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather-Valve-Ani3.gif\" alt=\"\" width=\"485\" height=\"575\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #0000ff;\">\u0643\u0644\u0627 \u0627\u0644\u0635\u0645\u0627\u0645\u064a\u0646 \u0645\u063a\u0644\u0642 \u0628\u0648\u0632\u0646 Both Weight Loaded<\/span><\/p>\n<p>.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-2604 size-full\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather-Valve2.png\" alt=\"\" width=\"455\" height=\"529\" srcset=\"https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather-Valve2.png 455w, https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather-Valve2-258x300.png 258w\" sizes=\"(max-width: 455px) 100vw, 455px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #0000ff;\">\u0635\u0645\u0627\u0645 \u0627\u0644\u0636\u063a\u0637 \u0645\u0641\u0644\u0642 \u0628\u064a\u0627\u064a Pressure Spring Loaded<\/span><\/p>\n<p>.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-2605 size-full\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather-Valve3.png\" alt=\"\" width=\"455\" height=\"442\" srcset=\"https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather-Valve3.png 455w, https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather-Valve3-300x291.png 300w\" sizes=\"(max-width: 455px) 100vw, 455px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #0000ff;\">\u0635\u0645\u0627\u0645 \u0627\u0644\u0641\u0631\u0627\u063a \u0645\u063a\u0644\u0642 \u0628\u064a\u0627\u064a Vacuum Spring Loaded<\/span><\/p>\n<p>.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-2606 size-full\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather-Valve4.png\" alt=\"\" width=\"455\" height=\"529\" srcset=\"https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather-Valve4.png 455w, https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/09\/breather-Valve4-258x300.png 258w\" sizes=\"(max-width: 455px) 100vw, 455px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #0000ff;\">\u0643\u0644\u0627 \u0627\u0644\u0635\u0645\u0627\u0645\u0627\u0646 \u0645\u063a\u0644\u0642 \u0628\u064a\u0627\u064a Both Spring Loaded<\/span><\/p>\n<p>*<\/p>\n<h2><span style=\"color: #ff6600;\">\u0645\u0635\u0637\u0644\u062d\u0627\u062a<\/span><\/h2>\n<p style=\"text-align: center;\">\u0635\u0645\u0627\u0645 \u0627\u0644\u062a\u0646\u0641\u0633 \u0644\u0644\u062e\u0632\u0627\u0646 &#8211; <span id=\"result_box\" class=\"\" lang=\"ar\"><span title=\"The pressure and vacuum developed in the tank shall be within the design values allowable by a code and function of pressure \/ vacuum relief valve is to conserve the vapour loss by opening and closing within the set values to safeguard the tank design parameters.\">\u0635\u0645\u0627\u0645 \u062a\u062e\u0641\u064a\u0641 \u0627\u0644\u0636\u063a\u0637\/\u0627\u0644\u062a\u0641\u0631\u064a\u063a<\/span><\/span><\/p>\n<p dir=\"ltr\" style=\"text-align: center;\"><span id=\"result_box\" class=\"\" lang=\"ar\"><span title=\"The pressure and vacuum developed in the tank shall be within the design values allowable by a code and function of pressure \/ vacuum relief valve is to conserve the vapour loss by opening and closing within the set values to safeguard the tank design parameters.\"><span title=\"The breather valve also known as pressure\/vacuum relief valve is a protective device mounted on the top of a fixed roof atmospheric storage tank.\">Pressure\/Vacuum Relief Valve<\/span><\/span><\/span> &#8211; <span id=\"result_box\" class=\"\" lang=\"ar\"><span title=\"The breather valve also known as pressure\/vacuum relief valve is a protective device mounted on the top of a fixed roof atmospheric storage tank.\">Breather Valve &#8211;\u00a0Conservation Valve &#8211;\u00a0<span title=\"The out-breathing process is an opposite phenomenon to inbreathing and it takes place when the tank is loaded and evaporation of liquid due to higher atmosphere temperature.\"><span title=\"This develops a vacuum in the tank if fixed vent nozzles is under sized or controlled venting is in close mode till preset value.\">Air Release &amp; Vacuum Breaker Valve<\/span><\/span> &#8211; Fixed Vent &#8211; <span title=\"The out-breathing process is an opposite phenomenon to inbreathing and it takes place when the tank is loaded and evaporation of liquid due to higher atmosphere temperature.\"><span title=\"This develops a vacuum in the tank if fixed vent nozzles is under sized or controlled venting is in close mode till preset value.\">Controlled Venting<br \/>\n<\/span><\/span><\/span><\/span><\/p>\n<p>*<\/p>\n<p style=\"text-align: center;\">\u0627\u0636\u063a\u0637 \u0647\u0646\u0627 \u0644\u062a\u062a\u0627\u0628\u0639 \u0635\u0641\u062d\u062a\u0646\u0627 \u0639\u0644\u064a \u0627\u0644\u0641\u064a\u0633 \u0628\u0648\u0643<a href=\"https:\/\/www.facebook.com\/Instruments-Simulation-987927711244444\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" class=\"alignnone size-full wp-image-2022\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/04\/Inst-Sim-Face-ani-small2.gif\" alt=\"\" width=\"270\" height=\"72\" \/><\/a><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #ff0000;\"><strong>***************************************************************<\/strong><\/span><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-559\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2016\/11\/handwave-Yellow.gif\" alt=\"handwave-yellow\" width=\"125\" height=\"70\" \/><\/p>\n<h3><span style=\"color: #ff6600;\"><strong>\u0645\u0648\u0627\u0636\u064a\u0639 \u0630\u0627\u062a \u0635\u0644\u0629<\/strong><\/span><\/h3>\n<h3>\u00a0.<\/h3>\n<table cellspacing=\"20\">\n<tbody>\n<tr>\n<td><a href=\"http:\/\/www.inst-sim.com\/1\/valves\/pressure-relief-devices\/\"><img loading=\"lazy\" class=\"alignnone size-medium wp-image-1968\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/04\/Types-of-reclosing-pressure-relief-devices-Ar-En-300x152.png\" alt=\"\" width=\"300\" height=\"152\" srcset=\"https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/04\/Types-of-reclosing-pressure-relief-devices-Ar-En-300x152.png 300w, https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/04\/Types-of-reclosing-pressure-relief-devices-Ar-En-768x390.png 768w, https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/04\/Types-of-reclosing-pressure-relief-devices-Ar-En.png 811w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/td>\n<td><a href=\"http:\/\/www.inst-sim.com\/1\/valves\/rupture-disc\/\"><img loading=\"lazy\" class=\"alignnone size-full wp-image-1952\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/03\/Burst-Disk-Ani0.gif\" alt=\"\" width=\"240\" height=\"223\" \/><\/a><\/td>\n<\/tr>\n<tr>\n<td>\n<h3><a href=\"http:\/\/www.inst-sim.com\/1\/valves\/pressure-relief-devices\/\">\u0623\u062f\u0648\u0627\u062a \u062a\u0646\u0641\u064a\u0633 \u0627\u0644\u0636\u063a\u0637<\/a><\/h3>\n<h3><a href=\"http:\/\/www.inst-sim.com\/1\/valves\/pressure-relief-devices\/\"> Pressure Relief Devices<\/a><\/h3>\n<\/td>\n<td>\n<h3><a href=\"http:\/\/www.inst-sim.com\/1\/valves\/rupture-disc\/\">\u0642\u0631\u0635 \u0627\u0644\u0625\u0646\u0641\u062c\u0627\u0631 Rupture Disc<\/a><\/h3>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img loading=\"lazy\" class=\"size-full wp-image-559 alignleft\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2016\/11\/handwave-Yellow.gif\" alt=\"handwave-yellow\" width=\"125\" height=\"70\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The breather valve also known as pressure\/vacuum relief valve is a protective device mounted on the top of a fixed roof atmospheric storage tank. Its primary function is to conserve the loss of storage tank content when the tank is in out-breathing mode. The purpose &amp; selection of breather valve is mainly to control the [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":2568,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[11],"tags":[33,192],"_links":{"self":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts\/2554"}],"collection":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/comments?post=2554"}],"version-history":[{"count":10,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts\/2554\/revisions"}],"predecessor-version":[{"id":2608,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts\/2554\/revisions\/2608"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/media\/2568"}],"wp:attachment":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/media?parent=2554"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/categories?post=2554"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/tags?post=2554"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}